interface-builder

问题 I made a mistake when I created one of my UIViewController objects. When I created the files, I forgot to select the Target for iPad option. I never considered this to be much of an issue, because I always change my initial view within the generated Nib file to not display a statusbar, and to be freeform in sizing. However, I've recently ran into a problem. The UIViewController that I created that wasn't Targeted for iPad has a toolbar on it. This means that the default style is a bluish

问题 I have a UILabel and I would like to make it react to a touch. I tried putting a button on top of the label, thanks to this I could interact with the button. However, the button cannot be fully transparent, right? I could set an alpha of the button to 0,02, but it is still visible on by background. How to solve this? Maybe I could set the properties in some other way to make them fully invisible? Or is there some other solution? 回答1: First, why not just use a button and set the button title

问题 when i try to build and run my app, it crashes and i got this in the log : reason: '[<LoadingViewController 0x6b2c5a0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key aproposViewController.' the strange is that aproposViewController is not used in LoadingViewController , it's just another view controller in my app. please help, thx in advance :) EDIT appdelegate.h : @class LoadingViewController; @interface TopStationAppDelegate : NSObject

问题 In most examples I see the following setup of IBOutlets: (Example A) FooController.h: @interface FooController : UIViewController { UILabel *fooLabel; } @property (nonatomic, retain) IBOutlet UILabel *fooLabel; @end FooController.m: @implementation FooController @synthesize fooLabel; @end But this works also fine (notice: no property and no synthesize): (Example B) FooController.h: @interface FooController : UIViewController { IBOutlet UILabel *fooLabel; } @end FooController.m:

问题 I created UIImageView with the help of Interface Bulder. Now I want to place label inside it (as its subview). In code I can type something like: [myUIImageView addSubview:myUILabel]; But can I do it with the help of IB? I found the solution for UIView , but can't find something similar for UIImageView . 回答1: You cannot add a subview to UIImageView in interface builder for reasons only known to Apple! You are right in saying that you can addSubview programmatically, but then, the overhead of

问题 I understand the old Struts and Springs method of aligning, sizing and distributing views in Interface Builder. However, I cannot seem to figure out how to evenly distribute views using auto layout with Xcode 5. There was a way to do it using Xcode 4, but that option is gone. I have 7 buttons arranged in a vertical stack. On a 3.5" layout, it looks great. When I preview the screen in the 4" layout, all of the buttons remain tightly packed and there is a large amount of space below the last

问题 Am having some trouble hooking up instance variables in the visual object editor using Xcode4. Have been able to connect the Whereami App Delegate to the mapView and activityIndicator, but for some reason, can't find the locationTitleField. Am also having trouble connecting the delegates back to the App Delegate. What am I doing wrong? Here is the code for Whereami App Delegate.h: #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> #import <MapKit/MapKit.h> @interface

问题 I want to have an UILabel with a max width of 100 and after that an UIImage, how can I do that in interface builder? I want that if the text is shorter the label is less than 100 but the UIImage is right behind the label. 回答1: you can do it with code like this: first init the label and the imageView _label = [[UILabel alloc] initWithFrame:CGRectZero]; _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(label.frame.origin.x + label.frame.size.width, label.frame.origin.y, 30, 30)]; then

问题 My application features a tableview which contains some rather complex tableviewcells. Therefore, these cells have been designed in Interface Builder and are instanciated later as needed using UINib which allows just that - load the content from a nib and instanciate it as needed. But UINib is only available for iOS 4.0 and above. Before I go ahead and abandon all the 3.x users, is there a way to (easily) recreate what I'm doing using pre-iOS4 classes and methods? Thanks alot!! 回答1: You can

问题 I have created an OpenGL ES 2.0 view that takes up the iPad's whole screen and I am rendering some things to it. now I want to resize the view to make it smaller and then add some components to control the content of the opengl view. this view is completely defined programmatically but my goal, because I want to add in some controls, is to use interface builder. how do I import this OpenGLView into interface builder? 回答1: I've figured out how to do it. You simply create a UIView in IB and